Package org.codehaus.stax2.ri.typed
Class NumberUtil
- java.lang.Object
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- org.codehaus.stax2.ri.typed.NumberUtil
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public final class NumberUtil extends Object
Helper class that contains method for converting numeric values to and from String representations.
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Field Summary
Fields Modifier and Type Field Description static int
MAX_DOUBLE_CLEN
Maximum number of characters in a serialized double is 26 (at least for Sun JDK; 19 digits for mantissa, 3 for exponent, signs for mantissa and exponent, decimal point, 'E'): but let's pad it up a little bit just to play it safe.static int
MAX_FLOAT_CLEN
JDK serializes floats same way as doubles, so let's reserve as much spacestatic int
MAX_INT_CLEN
Maximum number of characters in a serialized integer is 11; one for (minus) sign, and then up to 10 digitsstatic int
MAX_LONG_CLEN
Maximum number of characters in a serialized long is 21; one for (minus) sign, and then up to 20 digits
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Constructor Summary
Constructors Constructor Description NumberUtil()
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Method Summary
All Methods Static Methods Concrete Methods Modifier and Type Method Description static int
writeDouble(double value, byte[] buffer, int offset)
static int
writeDouble(double value, char[] buffer, int offset)
static int
writeFloat(float value, byte[] buffer, int offset)
static int
writeFloat(float value, char[] buffer, int offset)
static int
writeInt(int value, byte[] buffer, int offset)
static int
writeInt(int value, char[] buffer, int offset)
Note: caller must ensure that there is room for least 11 characters (leading sign, and up to 10 digits) in buffer passed.static int
writeLong(long value, byte[] buffer, int offset)
static int
writeLong(long value, char[] buffer, int offset)
Note: caller must ensure that there is room for least 21 characters (leading sign, and up to 20 digits ) in buffer passed.
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Field Detail
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MAX_INT_CLEN
public static final int MAX_INT_CLEN
Maximum number of characters in a serialized integer is 11; one for (minus) sign, and then up to 10 digits- See Also:
- Constant Field Values
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MAX_LONG_CLEN
public static final int MAX_LONG_CLEN
Maximum number of characters in a serialized long is 21; one for (minus) sign, and then up to 20 digits- See Also:
- Constant Field Values
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MAX_DOUBLE_CLEN
public static final int MAX_DOUBLE_CLEN
Maximum number of characters in a serialized double is 26 (at least for Sun JDK; 19 digits for mantissa, 3 for exponent, signs for mantissa and exponent, decimal point, 'E'): but let's pad it up a little bit just to play it safe.- See Also:
- Constant Field Values
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MAX_FLOAT_CLEN
public static final int MAX_FLOAT_CLEN
JDK serializes floats same way as doubles, so let's reserve as much space- See Also:
- Constant Field Values
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Method Detail
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writeInt
public static int writeInt(int value, char[] buffer, int offset)
Note: caller must ensure that there is room for least 11 characters (leading sign, and up to 10 digits) in buffer passed.
- Returns:
- Offset within buffer after outputting int
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writeInt
public static int writeInt(int value, byte[] buffer, int offset)
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writeLong
public static int writeLong(long value, char[] buffer, int offset)
Note: caller must ensure that there is room for least 21 characters (leading sign, and up to 20 digits ) in buffer passed.
- Returns:
- Offset within buffer after outputting int
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writeLong
public static int writeLong(long value, byte[] buffer, int offset)
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writeFloat
public static int writeFloat(float value, char[] buffer, int offset)
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writeFloat
public static int writeFloat(float value, byte[] buffer, int offset)
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writeDouble
public static int writeDouble(double value, char[] buffer, int offset)
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writeDouble
public static int writeDouble(double value, byte[] buffer, int offset)
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